CN205529851U - Concrete hollow slab bridge hinge joint steel reinforcing structure - Google Patents
Concrete hollow slab bridge hinge joint steel reinforcing structure Download PDFInfo
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- CN205529851U CN205529851U CN201620282768.7U CN201620282768U CN205529851U CN 205529851 U CN205529851 U CN 205529851U CN 201620282768 U CN201620282768 U CN 201620282768U CN 205529851 U CN205529851 U CN 205529851U
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- reinforcing bar
- hinge joint
- hinge seam
- joint
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Abstract
The utility model belongs to the technical field of bridge structures, specific saying so relates to a concrete hollow slab bridge hinge joint steel reinforcing structure, mainly is the new hinge joint reinforcing bar form in order to provide an assembled concrete slab bridge, through new reinforcing bar pin joint structure solve the hinge joint tension bar in empty core plate with hinge joint in the not enough problem of anchorage length, improve hinge joint 's tensile ability, provide a concrete hollow slab bridge hinge joint steel reinforcing structure, including empty core plate body and the inside empty core plate stirrup that sets up, be provided with the hinge joint pin joint reinforcing bar of a plurality of U -shapeds between adjacent empty core plate body, all be provided with the hinge joint tension reinforcement of a plurality of closed annulars between the empty core plate stirrup of hinge joint pin joint reinforcing bar rather than both sides, the setting is free core plate muscle and hinge joint longitudinal reinforcement from north to south respectively between empty core plate stirrup inside and hinge joint pin joint reinforcing bar, the utility model discloses it is simple and convenient to be under construction, has effectively improved the anti -shearing and bending resistance of hinge joint junction, has improved the life of bridge.
Description
Technical field
This utility model belongs to bridge structure technical field；Particularly relate to a kind of concrete hollow slab bridge hinge seam bar construction.
Background technology
Assembly hollow slab bridges construction is convenient, construction speed is fast, cost is relatively low, is a kind of bridge type that China's Short/Medium Span Bridge is conventional；But hollow slab bridge superstructure is mainly made up of cored slab and hinge seam, hinge seam is the important component that cored slab is laterally linked to be cooperation；But experiment and engineering practice show, hinge is the component that such bridge destroys at first during being sewn on use；In order to avoid cutting with scissors the premature failure of crack structure, hinge slit formula and arrangement of reinforcement have been carried out repeatedly improving by China；The main flow form of reinforcement of the hollow slab bridge hinge seam currently used is for resisting pulling force at bottom preparation gate-type reinforcing bar, its lap of splice stretching out cored slab entrance hinge seam is only 17cm, because hinge seam width is limited, it is without the probability lengthened, regulation according to " Code for design of concrete structures " 8.4.4 bar, the lap of splice of longitudinal tensile reinforcing bar is relevant to lap joint area percentage, and 30cm must not be less than, this makes gate-type reinforcing bar tensile property reduce, hinge seam anti-crack ability is improved limited, on-the-spot test and model test have shown that, what first the hollow slab bridge of preparation gate-type hinge seam reinforcing bar destroyed remains hinge seam and cored slab Interface Cracking, and then form straight joint up and down, bearing capacity and the durability of hollow slab bridge are had a strong impact on；But in the patent application that number of patent application disclosed in existing is CN201520248401, increase hinge kerf spacing although taking or set up the measure of hinge seam reinforcing bar to strengthen tensile connection between cored slab in hinge seam centre position, but these technology need to change existing cored slab size and size and hinge seam size, and the problem that the unresolved hinge seam reinforcing bar anchorage length in cored slab concrete set up is not enough, it is difficult in the short time be widely popularized in engineering；Also having number of patent application is the patent application of CN2014100013209, and after structurally arranging steel plate, hinge seam vibrates increasingly difficult, and construction quality is relatively difficult to ensure card.
Summary of the invention
Utility model purpose of the present utility model:
Primarily to provide the new hinge seam reinforcing bar form of a kind of Used in Assemble Type Concrete Slab, the problem that hinge seam tension reinforcement is not enough with anchorage length in hinge seam in cored slab is solved by new reinforcing bar pin joint structure, improve the resistance to tension of hinge seam, improve bearing capacity and the service life of hollow slab bridge structure.
The technical solution of the utility model is:
Provide a kind of concrete hollow slab bridge hinge seam bar construction, including cored slab body and the internal cored slab stirrup arranged thereof, the hinge key of joint being provided with multiple U-shaped between adjacent cored slab body connects reinforcing bar, connect the hinge seam tension reinforcement being provided with multiple closed ring between the cored slab stirrup of reinforcing bar and its both sides at hinge key of joint, and hinge key of joint internal at cored slab stirrup connects and is respectively arranged with cored slab between reinforcing bar and indulges muscle and hinge seam longitudinal reinforcement.
Hinge seam tension reinforcement, hinge seam longitudinal reinforcement and hinge key of joint connect reinforcing bar and all use spot welding mode to fix.
Described hinge seam tension reinforcement is bent molding by the diameter spiral more than or equal to 10mm or round bar.
The arrangement form of described hinge seam tension reinforcement is to be more than or equal to 10cm along the vertical interval cutting with scissors the vertical direction that key of joint connects reinforcing bar, and no less than 3 roads；The horizontal-direction pitch connecing reinforcing bar along hinge key of joint is 10cm～20cm.
It is screw-thread steel or the round steel that diameter is not less than 10mm that described hinge seam longitudinal reinforcement and hinge key of joint connect the material of reinforcing bar.
The beneficial effects of the utility model are:
The shearing resistance performance of hinge seam is effectively raised by arranging laterally hinge seam tension reinforcement at the pin joint of assembly hollow slab bridges, the longitudinal direction hinge seam tension reinforcement arranged by short transverse at pin joint, effectively resist transverse bending moment between hollow slab bridge and act on the tension at hinge seam, and it is simple and convenient to construct, effectively solve assembly hollow slab bridges hinge seam anchorage length and the technical problem of intensity deficiency, improve the anti-shearing and bending resistance of hinge seam junction, improve the service life of bridge.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model；
Fig. 2 is that Fig. 1 cuts with scissors partial enlarged drawing at seam reinforcing bar；
Fig. 3 is the front elevation view of Fig. 1；
Fig. 4 is the top view of Fig. 1；
Fig. 5 is the side view of Fig. 1；
Fig. 6 is the cored slab arrangement of reinforcement schematic diagram in embodiment 2；
Fig. 7 is embodiment 2 hinge seam reinforcing bar front elevation view；
In figure；1 is cored slab body；2 is cored slab stirrup；3 connect reinforcing bar for hinge key of joint；4 is hinge seam tension reinforcement；5 indulge muscle for cored slab；6 is hinge seam longitudinal reinforcement；7 is cored slab web hooping.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.
Embodiment one: as shown in Fig. 1～5, provide a kind of concrete hollow slab bridge hinge seam bar construction, including cored slab body 1 and the internal cored slab stirrup 2 arranged thereof, the hinge key of joint being provided with multiple U-shaped between adjacent cored slab body 1 connects reinforcing bar 3, connect the hinge seam tension reinforcement 4 being provided with multiple closed ring between the cored slab stirrup 2 of reinforcing bar 3 and its both sides at hinge key of joint, and hinge key of joint internal at cored slab stirrup connects and is respectively arranged with cored slab between reinforcing bar and indulges muscle 5 and hinge seam longitudinal reinforcement 6.
Hinge seam tension reinforcement 4, hinge seam longitudinal reinforcement 6 and hinge key of joint connect reinforcing bar 3 and all use spot welding mode to fix.
Described hinge seam tension reinforcement 4 is bent molding by the diameter spiral not less than 10mm or round bar.
The arrangement form of described hinge seam tension reinforcement 4 is to be more than or equal to 10cm along the vertical interval cutting with scissors the vertical direction that key of joint connects reinforcing bar, and no less than 3 roads；The horizontal-direction pitch connecing reinforcing bar along hinge key of joint is 10cm～20cm.
It is screw-thread steel or the round steel that diameter is not less than 10mm that described hinge seam longitudinal reinforcement 6 and hinge key of joint connect the material of reinforcing bar 3.
In concrete installation process, use following manner to carry out structure and install and make.
First carry out cored slab stirrup and cored slab indulges muscle design；
According to cored slab Reinforcement Design, select to increase and join cored slab stirrup or utilize cored slab to stitch tension reinforcement pin joint reinforcing bar in cored slab near web hooping and the interior limb near cored slab side as hinge, for guaranteeing pin joint effect, cored slab stirrup and vertical muscle diameter cannot be less than 10mm, are advisable with 14mm.
Next carries out hinge seam tension reinforcement and designs and produces；
Hinge seam tension reinforcement is bent by diameter form not less than the spiral of 10mm or plain bar, at two ends pinned locations curved 180 degree, middle straight line segment Guan Bi overlap joint, can use welding or colligation to connect, but the lap of splice must is fulfilled for the requirement of " Code for design of concrete structures " 8.4.4 bar；Hinge seam tension reinforcement is evenly arranged along hinge seam depth of section, and spacing is not preferably less than 10cm, and should not be less than 3 roads.It is longitudinally arranged spacing and is not preferably less than 10cm, be not the most preferably greater than 20cm；Hinge seam tension reinforcement, longitudinal reinforcement and pin joint reinforcing bar can be selected for the diameter spiral not less than 10mm or plain bar.
3rd step carries out hollow board prefabrication；
Cored slab stirrup 2, vertical muscle 5 and hinge seam tension reinforcement 4 fabrication and installation before hollow board prefabrication are complete, and hinge seam tension reinforcement is formed close-shaped by welding or overlap joint；Hollow board prefabrication divides three kinds of situations: (1) such as existing hollow plate shuttering is not added with transformation and uses, the part that hinge seam tension reinforcement can stretch out cored slab is folded upward at, and after complete form removal to be cast, artificial chisel removes, need not move toward straightening for ease of transport, scene to be transported to moves toward straightening process again；(2) transformation template or making new template, reserved hinge seam tension reinforcement stretches out hole, and the method is relatively costly, and transport is inconvenient, but hinge seam reinforcing bar need not bend, and saves the expense of artificial cutting simultaneously；(3) hinge seam tension reinforcement divides two sections of making, and in cored slab, hinge seam tension reinforcement stretches out not less than 5 times of bar diameters, is folded upward at, after complete form removal to be cast, artificial chisel removes, and need not move toward straightening for ease of transport, and scene to be transported to moves toward straightening and cuts with scissors seam tension reinforcement two-sided welding in hinge seam.
Finally carry out hinge seam reinforcement installation and hinge seam cast；
(1), after cored slab lifting is in place, manually adjusts hinge seam both sides hinge seam tension reinforcement, so that tension reinforcement annulus position is corresponding, is formed and close circular hole；(2) hinge key of joint is installed and connects reinforcing bar；(3) hinge seam longitudinal reinforcement is installed；(4) the vertical muscle of spot welding hinge seam, pin joint reinforcing bar and the node of tension reinforcement；(5) reinforcing bar of mating formation is installed；(6) bottom hinge seam, between cored slab, gap uses microdilatancy mortar to fill；(7) cast hinge seam and concrete of mating formation.
The embodiment 1 that is given by above-mentioned Fig. 1-5, special configuration cored slab stirrup 2；Also can increase web hooping simultaneously for most of hollow slab bridges and corresponding cored slab is indulged the diameter of muscle and simplified hinge seam reinforcing bar configuration.
Embodiment 2, cored slab arrangement of reinforcement is according to the new criteria one-level freely-supported 20m Hollow Slab Beam Bridge standard drawing of Ministry of Communications 2008 General sleeve figure, after web hooping and corresponding cored slab are indulged the diameter increase of muscle, can increase and join cored slab stirrup and vertical muscle, web hooping 7 in cored slab shown in Fig. 6 and vertical muscle 3 are designed, in standard drawing, the two diameter is respectively 10 and 12mm, and unification here is set to 14mm, then form the reinforcing bar scheme of hinge seam shown in Fig. 7.
The shearing resistance performance of hinge seam is effectively raised by arranging laterally hinge seam tension reinforcement at the pin joint of assembly hollow slab bridges, the longitudinal direction hinge seam tension reinforcement arranged by short transverse at pin joint, effectively resist transverse bending moment between hollow slab bridge and act on the tension at hinge seam, and it is simple and convenient to construct, effectively solve assembly hollow slab bridges hinge seam anchorage length and the technical problem of intensity deficiency, improve the anti-shearing and bending resistance of hinge seam junction, improve bridge service life.
Claims (5)
1. a concrete hollow slab bridge hinge seam bar construction, including cored slab body and the internal cored slab stirrup arranged thereof, it is characterized in that: the hinge key of joint being provided with multiple U-shaped between adjacent cored slab body connects reinforcing bar, connect the hinge seam tension reinforcement being provided with multiple closed ring between the cored slab stirrup of reinforcing bar and its both sides at hinge key of joint, and hinge key of joint internal at cored slab stirrup connects and is respectively arranged with cored slab between reinforcing bar and indulges muscle and hinge seam longitudinal reinforcement.
A kind of concrete hollow slab bridge hinge seam bar construction the most according to claim 1, it is characterised in that: hinge seam tension reinforcement, hinge seam longitudinal reinforcement and hinge key of joint connect reinforcing bar and all use spot welding mode to fix.
A kind of concrete hollow slab bridge hinge seam bar construction the most according to claim 1, it is characterised in that: described hinge seam tension reinforcement is bent molding by the diameter spiral not less than 10mm or round bar.
A kind of concrete hollow slab bridge the most according to claim 1 is cut with scissors and is stitched bar construction, it is characterised in that: the arrangement form of described hinge seam tension reinforcement is to be more than or equal to 10cm along the vertical interval cutting with scissors the vertical direction that key of joint connects reinforcing bar, and no less than 3 roads；The horizontal-direction pitch connecing reinforcing bar along hinge key of joint is 10cm～20cm.
A kind of concrete hollow slab bridge hinge seam bar construction the most according to claim 1, it is characterised in that: it is screw-thread steel or the round steel that diameter is not less than 10mm that described hinge seam longitudinal reinforcement and hinge key of joint connect the material of reinforcing bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620282768.7U CN205529851U (en) | 2016-04-07 | 2016-04-07 | Concrete hollow slab bridge hinge joint steel reinforcing structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620282768.7U CN205529851U (en) | 2016-04-07 | 2016-04-07 | Concrete hollow slab bridge hinge joint steel reinforcing structure |
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| CN205529851U true CN205529851U (en) | 2016-08-31 |
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| CN201620282768.7U Expired - Fee Related CN205529851U (en) | 2016-04-07 | 2016-04-07 | Concrete hollow slab bridge hinge joint steel reinforcing structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105648899A (en) * | 2016-04-07 | 2016-06-08 | 华北水利水电大学 | Hinge joint reinforcement bar structure for concrete hollow slab bridge |
-
2016
- 2016-04-07 CN CN201620282768.7U patent/CN205529851U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105648899A (en) * | 2016-04-07 | 2016-06-08 | 华北水利水电大学 | Hinge joint reinforcement bar structure for concrete hollow slab bridge |
| CN105648899B (en) * | 2016-04-07 | 2017-09-05 | 华北水利水电大学 | A kind of concrete hollow slab bridge hinge seam bar construction |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20180407 |
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| CF01 | Termination of patent right due to non-payment of annual fee |